Abag contain red and blue marbles totalling between 50 and 100 in number. if two marbles are drawn at random, the chances of both of them are red is 25%.one third of the marbles are picked from the bag, at random and thrown away. if one marble is drawn at random from the bah, what is tha probability of it being blue?

"curse these trig-loving pirates! " devora mutters as she looks at the map. then, after thinking for a moment, she walks back to the entrance of the secret cave, measuring 48 meters along the way. after performing a calculation, devora walks back to the empty treasure, faces the entrance, and turns a certain number of degrees to her left before walking 89 meters to the treasure. supposing that the angle at the cave entrance is acute and that devora's calculations were correct, how many degrees did she turn?